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arXiv · 2411.15955

Run-Length-Limited ISI-Mitigation (RLIM) Coding for Molecular Communication

Melih Şahin·Ozgur B. Akan
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Abstract

Inter-symbol interference (ISI) limits reliability in diffusion-based molecular communication (MC) channels. We propose RLIM, a family of run-length-limited (RLL) codes that form fixed-size codebooks by minimizing the total number of 1-bits, increasing the per-symbol molecule budget under standard power normalizations and thus improving reliability. We develop a provably optimal linear-time greedy decoder that is equivalent to Viterbi decoding under a deterministic last-wins tie-break and has lower computational complexity; empirically, it outperforms first-wins and random Viterbi variants on RLL baselines. Extensive binomial and particle-tracking simulations show that RLIM achieves lower bit error rate (BER) than classical RLL and other prominent coding schemes across a broad range of scenarios.

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Melih Şahin, Ozgur B. Akan. 2024-11-24. Run-Length-Limited ISI-Mitigation (RLIM) Coding for Molecular Communication. https://arxiv.org/abs/2411.15955

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